Science and Technology. Ping, a pulse of sound in active sonar. Pinging, the noise indicative of improper combustion in internal combustion engines. Ping (Chinese: åª), a Taiwanese measure of area. Ping project, a project of the European Molecular Biology network (EMBnet)
Pre-Market Stock Trading. As its name suggests, pre-market stock trading occurs before the stock market opens up for its regular hours of trading at 9:30 a.m ET. Pre-market stock trading takes place between the hours of 8:00 to 9:30 a.m. ET.
Definition of PRESELL. transitive verb. 1. : to precondition (as a customer) for subsequent purchase or create advance demand for (as a product) especially through marketing strategies.2.. : to precondition (as a customer) for subsequent purchase or create advance demand for (as a product) especially through marketing strategies.